{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:32.252862", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2015-Mar-28_to_2015-Mar-30_23.0_-3.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2015030001029}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "March 28 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 30 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 64857.44837274772}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Congo DRC"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -3.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 23.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -0.47], [21.5, -0.25], [21.75, -0.35], [22.0, -0.25], [22.25, -0.35], [22.5, -0.25], [23.0, -0.46], [23.5, -0.25], [24.03, -0.47], [24.25, -1.0], [24.15, -1.25], [24.25, -1.5], [24.15, -1.75], [24.25, -2.0], [24.03, -2.53], [23.68, -2.68], [23.54, -3.0], [23.68, -3.32], [24.03, -3.47], [24.25, -4.0], [24.03, -4.53], [23.5, -4.75], [23.25, -4.65], [23.0, -4.75], [22.47, -4.53], [22.32, -4.18], [21.97, -4.03], [21.75, -3.5], [21.85, -3.25], [21.82, -3.18], [21.47, -3.03], [21.32, -2.68], [21.25, -2.65], [21.0, -2.75], [20.47, -2.53], [20.25, -2.0], [20.47, -1.47], [20.88, -1.3], [20.75, -1.0], [20.97, -0.47]]]]}, "2015-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -0.47], [21.5, -0.25], [21.75, -0.35], [22.0, -0.25], [22.25, -0.35], [22.5, -0.25], [23.0, -0.46], [23.5, -0.25], [24.03, -0.47], [24.25, -1.0], [24.15, -1.25], [24.25, -1.5], [24.15, -1.75], [24.25, -2.0], [24.03, -2.53], [23.68, -2.68], [23.54, -3.0], [23.68, -3.32], [24.03, -3.47], [24.25, -4.0], [24.03, -4.53], [23.5, -4.75], [23.25, -4.65], [23.0, -4.75], [22.47, -4.53], [22.32, -4.18], [21.97, -4.03], [21.75, -3.5], [21.85, -3.25], [21.82, -3.18], [21.47, -3.03], [21.32, -2.68], [21.25, -2.65], [21.0, -2.75], [20.47, -2.53], [20.25, -2.0], [20.47, -1.47], [20.88, -1.3], [20.75, -1.0], [20.97, -0.47]]]]}, "2015-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.97, -0.47], [21.5, -0.25], [21.75, -0.35], [22.0, -0.25], [22.25, -0.35], [22.5, -0.25], [23.0, -0.46], [23.5, -0.25], [24.03, -0.47], [24.25, -1.0], [24.15, -1.25], [24.25, -1.5], [24.15, -1.75], [24.25, -2.0], [24.03, -2.53], [23.68, -2.68], [23.54, -3.0], [23.68, -3.32], [24.03, -3.47], [24.25, -4.0], [24.03, -4.53], [23.5, -4.75], [23.25, -4.65], [23.0, -4.75], [22.47, -4.53], [22.32, -4.18], [21.97, -4.03], [21.75, -3.5], [21.85, -3.25], [21.82, -3.18], [21.47, -3.03], [21.32, -2.68], [21.25, -2.65], [21.0, -2.75], [20.47, -2.53], [20.25, -2.0], [20.47, -1.47], [20.88, -1.3], [20.75, -1.0], [20.97, -0.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4693086550823864}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6761106600080111}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.32216430213151, 23.818519061705615, 23.71372031040329]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.36527679828953, 23.328987035762623, 23.057871277445486]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9291379233391532, -1.4813729607909798, -1.6178210958939006]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4693086550823864, -1.6925259821511531, -1.8757353974973512]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7689859900998144, -1.3605979475760537, -1.4637716337390099]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3079477959001866, -1.5476906327318498, -1.7160721537925088]}}